ASTROSAT CZTI

Data Quality Report

Orbit 04185

Creation date: 2024-06-27T14:38:31.420194
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G05_240T01_9000000536_04185cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04185cztM0_level2_quad_clean.evt
Size (bytes)456,753,60063,760,320
Size435.6 MB 60.8 MB
Events in quadrant A3,901,082372,436
Events in quadrant B3,229,243378,157
Events in quadrant C2,980,181367,935
Events in quadrant D3,279,914357,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158962
B0137311
C0133371
D0143761

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65051882.890085%
B6505971.491161%
C6505520.799385%
D6505971.491161%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7475 6506 68 68 0.91% 1.05%
B 7475 6506 1 1 0.01% 0.02%
C 7475 6506 2 2 0.03% 0.03%
D 7475 6506 50 50 0.67% 0.77%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 118 366061 2293.74 777 761 159.3
A 3 1 206682 1292.99 777 761 159.3
A 0 199 158148 988.24 777 761 159.3
B 3 0 73143 471.68 792 774 153.4
B 4 48 23118 145.63 792 774 153.4
B 0 183 18144 113.21 792 774 153.4
C 10 65 22429 122.9 756 758 176.3
C 13 61 6243 31.11 756 758 176.3
C 9 144 4414 20.73 756 758 176.3
D 12 233 204383 1103.44 755 733 184.6
D 13 46 62099 332.5 755 733 184.6
D 13 239 56306 301.11 755 733 184.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter